Home / 13,117.39-18,102.08-7,149.04

Finding the Fourth Proportional to 13,117.39, 18,102.08 and 7,149.04

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Solution

The fourth proportional to 13,117.39, 18,102.08 and 7,149.04 is: 9,865.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,117.39 : 18,102.08 = 7,149.04 : x
  2. Step 2: Convert to fraction form
    13,117.39/18,102.08 = 7,149.04/x
  3. Step 3: Cross multiply
    13,117.39x = 18,102.08 × 7,149.04
  4. Step 4: Simplify right side
    13,117.39x = 129,412,466.62
  5. Step 5: Solve for x
    x = 129,412,466.62/13,117.39
  6. Step 6: Final answer
    x = 9,865.72

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.